JP2798716B2 - Cassette tape loading device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette tape loading apparatus for loading and unloading a cassette tape such as a rotary head type digital audio tape recorder (hereinafter referred to as R-DAT).

[Conventional technology]

Generally, the cassette tape for R-DAT is slidably provided with a slider that opens and closes the reel boss insertion hole on the bottom of the case in order to prevent dust and the like from entering the case, and only when the cassette tape is used. The slider slides to open the reel boss insertion hole.

As described above, in the structure in which the slider of the cassette tape is slid to open the reel boss insertion hole, it is necessary to start the loading operation after the slider is reliably opened. And is configured as follows.

FIGS. 8 (a) and 8 (b) show different states, respectively. First, as shown in FIG. 8 (a), the cassette tape (T) is pushed inward of the holder, and the holder is placed at the proper device position of the holder. By mounting, the slider on the bottom surface of the cassette tape (T) is slid by the slide means provided on the holder, and the reel boss insertion hole is opened.

At this time, while pressing the cassette tape (T), the 8th
As shown in FIG. 7A, one end of the rotary lever (L) urged in the direction opposite to the pushing direction by the spring (S) comes into contact with the rear surface of the cassette tape (T). The cassette tape (T) is pushed in against the urging force of (1), and the urging force of the spring (S) is always applied even during the loading operation.

Then, when the cassette tape (T) is pushed into the regular mounting position of the holder, as shown in FIG. 8 (b), a detection switch by the operation piece (P) provided at the other end of the lever (L). A detection switch (SW) is provided so that the pressing of the contact (C) of the (SW) is released, and the cassette tape is turned on or off by releasing the pressing of the contact (C). The loading of the cassette tape (T) with the holder is detected, and the loading operation of the cassette tape (T) is started together with the holder by detecting the attachment of the holder (T) to the regular mounting position and the opening of the cassette tape (T) slider and reel boss insertion holes. .

[Problems to be solved by the invention]

In the conventional case, since the lever (L) is urged by the spring (S), when the cassette tape (T) is mounted at the proper device position of the holder, the cassette tape (T) is not moved.
When the pushing force is released, the cassette tape (T) is urged in the discharge direction by the urging force of the spring (S), the position of the cassette tape (T) with respect to the holder is shifted, and the cassette tape (T) is displaced. However, there is a problem that the loading operation is performed without the slider and reel boss insertion holes of the cassette tape (T) being completely opened.

During the loading operation, the biasing force of the spring (S) is always applied to the cassette tape (T) as described above.
There is also a problem that a smooth loading operation cannot be performed.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above points, and an object of the present invention is to allow a cassette tape slider and a reel boss insertion hole to be completely and reliably opened, thereby enabling a smooth loading operation.

[Means for solving the problem]

In order to achieve the above object, a cassette tape loading apparatus according to the present invention comprises: a side plate erected on both left and right sides of a chassis; a guide plate fixed outside one of the side plates; A main slider that slides in the front-rear direction with respect to the main slider; a sub-slider that slides in the front-rear direction in conjunction with the main slider; a sliding frame that slides in the front-rear direction in conjunction with the sub-slider; A holder which is provided movably up and down, holds a cassette tape, slides the sliding frame rearward to move to a horizontal loading completion position, and then moves down to a vertical loading completion position; and the holder is near the cassette mounting / dismounting position. Urging means for urging the sub-slider forward only when and when the tape attached to the holder is moved rearward against the urging force of the urging means. A guide mechanism for guiding the movement of the holder by pushing, a loading switch that operates by detecting a slight backward movement of the holder due to pushing, and sliding the main slider backward by the operation of the loading switch. A driving means for sliding the main slider forward by operating an unloading switch; and a driving means connected to the main slider via a connecting member, wherein the main slider moves rearward to separate from the rear surface of the tape, And a discharge pin for pushing the tape forward by contacting the rear surface of the tape by moving the slider forward.

[Action]

In the above configuration, the sub-slider is urged forward by the urging means only when the holder is near the cassette attaching / detaching position, and the urging force of the spring is applied to the holder via the sliding frame, and the sub-slider is mounted on the holder. When the cassette tape is pushed in against the urging force, the holder is moved rearward while being guided by the guide mechanism, and the loading switch is operated by a slight movement of the holder rearward. The forward bias of the sub-slider by the biasing means is also released, and the main slider slides rearward by the driving means, so that a predetermined amount of movement of the holder is detected by the loading switch, and during this time the cassette tape slider is opened. When the cassette tape is turned on, as in the conventional case where the position of the cassette tape is detected by a spring, a lever and a switch. The loading operation is performed with the cassette tape slider and reel boss insertion holes completely and securely opened without shifting from the proper mounting position of the rudder, and the spring biasing force is maintained during the loading operation as before. A smooth loading operation is performed without adding in the unloading direction.

〔Example〕

An embodiment will be described with reference to FIGS. 1 to 7.

(Structure) In the drawings, (1a) and (1b) are the left and right plates erected on both the left and right sides of the chassis (not shown), and (2) is the front of the both plates (1a) and (1b) , Two long holes for holder guides, (3) a guide plate fixed at a predetermined interval outside the right side plate (1b), and (4a) to (4g) a guide plate (3). ), Front and rear guide holes,
a) to (5e) are pins planted on the left side of the guide plate (3).

At this time, the guide hole (4d) has a shape, and the guide hole (4e) is composed of a front rectangular portion and a rear elongated portion following the rectangular portion.

Further, (6a) and (6b) are small pieces integrally formed at the upper end of the guide plate (3), and (7a) and (7b) are small pieces (6a) and (6).
Pins respectively implanted in b), (8) is the guide plate (3)
A main slider in the form of a flat plate which slides in the front-rear direction with respect to the guide plate (3) on the left side of the main slider; (8) is a front and rear direction guide hole provided in
The length of the guide hole (10e) is the longest and slightly shorter than the entire length of the main slider (8), and then the length of the guide hole (10a) is long and almost half the length of the main slider (8).

By the way, the guide holes (10c) and (10d) have a V-shape, the rear of the guide hole (10c) is inclined obliquely upward, and the front of the guide hole (10d) is inclined obliquely upward.

In (11), the right end of the substantially triangular plate is downward.
A sub-slider which is formed to be bent by 90 ° and slides in the front-rear direction in conjunction with the main slider (8), (12) is a pin planted on the upper surface of the left end of the sub-slider (11),
3c) is a pin planted on the right side of the bent portion of the sub-slider (11), (14) is a U-shaped lever, and a pin (5) of the guide plate (3) is inserted into the through hole (15) at the right end. 7b) is inserted and the rear end is rotatably supported by the lever (14). The pin (12) of the sub-slider (11) is inserted into the through hole (16) at the front end of the connecting plate (16).
Are inserted, and the sub-slider (11) and the lever (14) are connected.

(17) is a sliding frame formed by extending a horizontal plate between the upper ends of the left and right vertical plates in the front-rear direction, and (18) is a sliding frame (1).
7) A keyhole-shaped through-hole provided in the horizontal plate, (19) two inclined guides formed at the front of both vertical plates of the sliding frame (17) and inclined obliquely upward toward the rear. The hole, (20) is a pin, which is implanted in the lower surface of the left end of the lever (14) and has a through hole (18).
The sliding frame (17) slides in the front-rear direction via the lever (14) in conjunction with the sub-slider (11).

(21) is a holder having a cross-sectional shape and two
The pins (22) planted one by one are inserted into the long holes (2) of both side plates (1a) and (1b) and the guide holes (19) of the sliding frame (17), and the holder (21) slides. The sliding frame (17) is mounted on the frame (17) so that it can move up and down, holds cassette tape (not shown), and slides the sliding frame (17) backward to move the holder (21) to the horizontal loading complete position. Slide the holder (2) to the vertical loading completion position by sliding further back in (17).
1) moves down.

(23) is a ridge for unlocking the cassette tape slider formed on the holder (21), and (24) is engaged with the cassette tape slider formed on the rear end of the holder (21) to lock this slider. Two locking claws to be opened, when the cassette tape is mounted on the holder (21) at the cassette attaching / detaching position, the locking of the slider is released by the ridge (23), and the locking claw (24) When the cassette tape is pushed in while being locked to the slider, the slider is opened and the reel boss insertion hole is opened.

(25) is a rotary plate, a through hole (26) is provided in the lower rear, a locking pin (27) is planted on the left side of the lower front, and a U-shaped cutout (28) is provided in the upper part. Is formed, and the rotating plate (25) is connected to the guide plate (3) in a state where the through hole (26) communicates with the through hole (29) provided in front of the pin (5d) of the guide plate (3). A cylindrical projection (31) integrally formed on the right side of the small disk (30) is loosely inserted into the through-hole (26) from the left, and is formed on the projection (31). A screw (33) is screwed into the hole (32), and a rotating plate (25) is rotatably attached to the guide plate (3).

(34) is a spring, both ends of which are locked by the pins (27) and (5d), and constitute a biasing means together with the rotating plate (25).

At this time, the pin (13a) of the sub-slider (11) is moved through the guide hole (10b) of the main slider (8).
The pin (13b) of the sub-slider (11) is inserted through the guide hole (4c) of the guide plate (3), and the pin (13c) of the sub-slider (11) is inserted through the rotary plate (4). twenty five)
Guide hole (4g) of guide plate (3) through cutout (28)
The rotating plate (25) is rotated by the positional relationship between the pin (13c), the cutout (28), and the guide hole (4g), and the through hole (rotating center of the rotating plate (25)) is formed. The direction of the biasing force of the spring (34) applied to the rotating plate (25) changes depending on whether the rotating plate (25) is positioned above or below the spring (34) with the rotation of the rotating plate (25). The rotating plate (25) is urged to rotate counterclockwise or clockwise as viewed from the right side.

However, the rotation of the rotating plate (25) in the clockwise direction as viewed from the right side is restricted by the pin (5d), and the pin (5d) functions as a stopper.

Further, (35) is a moving plate provided between the main slider (8) and the guide plate (3) and slid in the front-rear direction in conjunction with the main slider (8), and (36a) and (36b) are moving plates. (35)
The guide holes (37a) and (37b) provided in the moving plate (3
Pins are implanted at the front and rear ends of the right side of 5), and are respectively inserted into the guide holes (4a) and (4f) of the guide plate (3).

(38) is a lever provided at the upper right front of the guide plate (3), and (39) is a pin (37a) inserted through the guide hole (4a) provided at the front of the lever (38). Inserted through-hole, (4
0) is installed on the left rear part of the lever (38) and the guide plate (3)
The pin inserted in the guide hole (4d) of the moving plate (35), the guide hole (36b) of the moving plate (35) and the guide hole (10c) of the main slider (8). (42) is a through-hole in which a pin (13a) inserted through a guide hole (4b) and inserted through a guide hole (4b) is inserted through a front portion of the lever (41).
Reference numeral (43) denotes a pin, which is implanted at the left rear portion of the lever (41), and is inserted into the guide hole (4e) of the guide plate (3) and the guide hole (10d) of the main slider (8).

At this time, a guide mechanism is constituted by the lever (41), the pin (43), and the guide holes (4e) and (10d), and the spring (34) of the cassette tape attached to the holder (21) at the cassette attaching / detaching position is attached. Holder (2
The movement of 1) is guided, so that the holder (2) can be driven only by the pushing force regardless of the loading motor described later.
1), the sliding frame (17), the sub-slider (11), and the main slider (8) can slide backward by a predetermined amount.

By the way, the pins (5a) and (5c) of the guide plate (3) correspond to the guide holes (10c) and (10e) of the main slider (8), respectively.
The pin (5b) of the guide plate (3) is inserted into the moving plate (35).
The main slider (8) is inserted into the guide hole (10a) through the guide hole (36).

In addition, (44) is a mounting plate formed on the front upper portion of the moving plate (35), (45) is a connecting plate whose front end is rotatably mounted on the mounting plate (44), and (46) is a discharge lever. The pin (7a) of the guide plate (3) is inserted into the through hole (47) at the right end,
The pin (49) planted at the rear end of the connecting plate (45) is inserted into the through hole (48) at the center front, and the discharging lever (7) is centered on the pin (7a) by sliding the moving plate (35). 45) is to rotate.

Furthermore, (50) is a discharge pin, and a discharge lever (46)
And is connected to the main slider (8) via connecting members such as a discharge lever (46), a connecting plate (45), and a moving plate (35), and is rearward of the main slider (8). To the rear end of the left end of the discharge lever (46)
The ejection pin (50) is separated from the rear surface of the cassette tape, and the ejection lever (46) is moved by moving the main slider (8) forward.
The ejection pin (50) comes into contact with the rear surface of the cassette tape and pushes the cassette tape forward by the forward movement of the left end of the cassette tape.

A loading switch (51) is mounted on the right side of the guide plate (3) in front of the guide hole (4c), and a pin (51) whose operation piece (51) 'is inserted through the guide hole (4c). 13b), and the pin (13b) is operated by the rearward movement of the holder (21) due to the pushing of the cassette tape mounted on the holder (21) against the spring (34). The switch (51), which has been off until then, is turned on by contact of the pin (13b) with the piece (51) '.

By the way, although not shown, a loading motor which is operated by turning on the loading switch (51) and operating the unloading switch on the operation panel is provided. The meshed gear (52) rotates to slide the main slider (8) backward and forward, and the motor and the gear (52) constitute driving means for driving the main slider (8). I have.

At this time, the main slider (8) slides backward by turning on the loading switch (51), and the main slider (9) slides forward by operating the unloading switch.

(Operation) Next, the operation of the above embodiment will be described.

Now, as shown in FIG. 1 (a), when the holder (21) is in the cassette attaching / detaching position and before the cassette tape is mounted, the rotating plate (25) and the spring (34) are in the state shown in FIG. ), The through hole (26) which is the center of rotation of the rotary plate (25) is above the spring (34), and the rotary plate (25) is moved by the spring (34). ), The sub-slider (11) is urged in the direction indicated by the solid arrow in FIG. 3A via the pin (13c) in contact with the inside of the cutout (28). That is, it is urged in the unloading direction.

Next, cassette tape is attached to the holder (21),
While the cassette tape is pushed into the holder (21), the slider and reel boss insertion holes of the cassette tape are opened,
At this time, the cassette tape is pushed in against the urging force of the spring (34).
By pushing against the urging force of 4), the holder (2
1), the sliding frame (17), the sub-slider (11), the main slider (8) and the moving plate (35) slide rearward as shown in FIGS. 1 (b) and (c).

By the way, like this, the cassette tape is
When it is attached to and pushed in, the pin (4
3) is the square part of the guide hole (4e) of the guide plate (3),
And the pin (43) is moved forward by the length of the horizontal portion of the guide hole (10d) by pushing the cassette tape because the pin (43) is in the horizontal portion behind the guide hole (10d) of the main slider (8). By pushing the cassette tape, the main slider (8) can slide backward by the length of the horizontal portion of the guide hole (10d), and the holder (21) moves backward by the pushing force. .

However, the pin (4
When (3) comes into contact with the rear inner surface of the rectangular portion of the guide hole (4e) as shown in FIG. 7 (a), the lever (41) cannot rotate or move, and the main slider (8) can be driven only by the pushing force. )
Cannot be slid further backward, and the holder (21) cannot move further backward.

Therefore, until the pin (43) comes into contact with the rear inner surface of the square portion of the guide hole (4e), the holder (2
The backward movement of 1) is guided by the guide mechanism.

Next, when the main slider (8) and the sub-slider (11) slide to the state shown in FIG.
The pin (13b) is connected to the operation switch (5) of the loading switch (51).
1) ', the loading switch (51) is turned on, the loading motor operates, the gear (52) rotates, and the main slider (8) is slid backward by the rotation of the gear (52). , Horizontal loading by the motor is performed, and loading is started, and the main slider (8)
As the sub-slider (11) moves rearward in conjunction with, the pin (13c) in the cutout (28) rotates the rotary plate (25), as shown in FIG. Eventually rotating plate (25)
Due to the rotation of the spring (34), the spring (34) moves above the through-hole (26), the biasing direction of the rotating plate (25) by the spring (34) is reversed, and the rotating plate (25) is viewed from the right side when viewed clockwise. Rotate in the direction.

Further, with the rotation of the rotating plate (25), as shown in FIG. 6 (c), the pin (13c) is detached from the cutout (28), and the rotation of the rotating plate (25) is changed to the pin (5d). As the sub-slider (11) slides in conjunction with the main slider (8), the pins (13a) to (13c) of the sub-slider (11) are guided by the guide holes (4b), ( Move 4c) and (4e) backward.

By the way, as described above, the loading switch (5
When 1) is turned on and the main slider (8) starts sliding by the motor, the main slider (8) slides rearward to move the guide hole (10d), as shown in FIG. 7 (a). The pin (43) attached to the front end of the horizontal portion of the guide hole (10d) of the main slider (8) relatively moves the inclined portion of the front portion of the guide hole (10d) as shown in FIG. Moving forward, the pin (43) is in the guide hole (4e) of the guide plate (3).
The pin (43) moves from the rectangular portion to the elongated portion so that the pin (43) can slide rearward along the elongated portion of the guide hole (4e), and is integrated with the main slider (8) and the sub-slider (11), The sliding frame (17) and the holder (21) slide backward.

In this way, the sub-slider (11) and the sliding frame (1) are linked to the main slider (8) sliding backward by the motor.
7) is slid backward, so that FIG.
As shown in (e) and (f), the holder (21) moves rearward together with the cassette tape. During this time, the holder (21) moves to the horizontal loading completed position, and then the main slider (8) is moved. ) Slides, the pin (22) of the holder (21) moves through the long hole (2) of the side plates (1a) and (1b) and the guide hole (19) of the sliding frame (17), and the holder ( 21) is shifted from horizontal loading to vertical loading, and moves down to the vertical loading completion position. During this vertical loading, the lid on the rear surface of the cassette tape is opened by a lid opening means (not shown), and the tape is exposed.

On the other hand, in the unloading operation, by operating the unloading switch on the operation panel, the loading motor rotates in the opposite direction to that during loading and the main slider (8) slides forward. (11), the sliding frame (17) slides forward, and as shown in FIGS. 1 (f), (e), (d), (c), (b) and (a), at the time of loading. By the reverse operation, the holder (21) moves together with the cassette tape to the cassette attaching / detaching position, and at the final stage, the main slider (8) slides forward to move the moving plate (35) forward. Then, the left end of the discharge lever (46) moves forward, the discharge pin (50) comes into contact with the rear surface of the cassette tape, and the cassette tape is pushed forward by the discharge pin (50).

〔The invention's effect〕

Since the present invention is configured as described above,
The following effects are obtained.

Only when the holder is in the vicinity of the cassette attaching / detaching position, the sub-slider is urged forward by the urging means, a spring urging force is applied to the holder via the sliding frame, and the cassette tape mounted on the holder is urged by the urging force. The holder is moved backward while being guided by the guide mechanism by being pushed in, and the loading switch is operated by a slight movement of the holder to the rear, and thereafter the sub-slider is operated by the biasing means. Is also released, and the main slider slides rearward by the driving means, so that a predetermined amount of movement of the holder can be detected by the loading switch. The loading operation is performed with the cassette tape slider and reel boss insertion holes completely and securely opened without deviation from the mounting position. In addition, a smooth loading operation can be performed without applying a biasing force of a spring in the unloading direction during the loading operation as in the related art, and the reliability of the loading operation can be improved. .

[Brief description of the drawings]

1 to 7 show an embodiment of a cassette tape loading apparatus according to the present invention. FIGS. 1 (a) to 1 (f) are right side views in different states, FIG. 2 is a perspective view, and FIG. FIGS. 3 and 4 are separated perspective views of different parts, FIGS. 5 (a) to (e) are right side views of each member, and FIGS. 6 (a) to (c) are for explanation of some operations. 7 (a) and 7 (b) are right side views for explaining a part of different operations,
8 (a) and 8 (b) are partial plan views of a conventional example. (1a), (1b) ... side plate, (3) ... guide plate, (4e),
(10d) ... guide hole, (8) ... main slider, (11)
... Sub-slider, (17) ... Sliding frame, (21) ... Holder, (25) ... Rotating plate, (34) ... Spring, (41) ... Lever, (43) ... Pin, (50) ... discharge pin, (51) ...
... Loading switch, (52) ... Gear.

Claims (1)

(57) [Claims] 1. A side plate erected on both left and right sides of a chassis; a guide plate fixed to the outside of one of the side plates; a main slider slidable in the front-rear direction with respect to the guide plate; A sub-slider that slides in the front-rear direction in conjunction with the main slider; a sliding frame that slides in the front-rear direction in conjunction with the sub-slider; A holder that moves down to the vertical loading completion position after moving to the horizontal loading completion position by sliding the moving frame backward, and a biasing device that biases the sub-slider forward only when the holder is near the cassette attaching / detaching position. Means, a guide mechanism for guiding the movement of the holder by pushing the tape mounted on the holder backward against the urging force of the urging means, and a guide mechanism. A loading switch that operates by detecting a slight rearward movement of the holder, and slides the main slider rearward by operating the loading switch, and slides the main slider forward by operating an unloading switch. A drive unit, connected to the main slider via a connecting member, separated from the rear surface of the tape by moving the main slider rearward, and contacting the rear surface of the tape by moving the main slider forward. And a discharge pin for pushing the tape forward.